Hinge joint



Nov. 9 1926.

L. v. DIXON HINGE JOINT Filed NOV. 21, 1925 INVENT UR Patented Nov. 9, teas.

1,606,517 ENT OFFICE.

I LEUNARD V. DIXON, OFTQRQNTO, ONTARIO, CANADA, ASSIGNO B TO DUNILOP TIRE & RUBBER ODS GO. LIMKTED, 0F TORONTO, CANADA.

nrnon .ro'rnr.

Application filed November 21, 1925. Serial No. 70,653.

This invention relates to hinge joints par ticularlyadapted for use with certain types of vulc'anizing molds in which one part of,

the mold is formed in a hinged door or cover. When such doors are provided with ordinary hinges, the motion of the door is not parallel to the axis of the mold and it it equently happens that the door pinches on the molded article adjacent the hinges and, when pressure is exerted on the door remote from the hinges to close the door, the hinges are broken.-

My 'object in the present invention is to devise aform of hinge which will prevent any such strain being exerted on the hinge as would tend to break it.

I attain my object by roviding a form of hinge which permits t e door toswing substantially in the ordinary manner-during the major part of its movement in opening or closing, but which fprovides fora limited parallel movement 0 the door when the door is in its nearly-closed position.

The invention is illustrated in the accompanying drawings in which Fig. 1 is a plan view, partly in section, of-

a double mold provided with my improved hinge, one door being closed and the other slightly open;

Fig. 2a front elevation of the same partly broken away;

Fig. 3 a side elevation; and

Fig. 4 a front elevation of a modified form of hinge.

In the drawings like numerals of reference indicate corresponding parts in the difierent figures.

1 are door frames in the present case forming part of a double tire mold. 2 are the doors or closures which, in the present case, also form parts of the molds.

As both doors are mounted in exactly the same way, the description of one will apply also to the other. The door is provided with one or more hinge knuckles 3. Complementary hinge knuckles 4 are formed on the door frame. The knuckles on the door and door frame, instead of being in alinement, as in an ordinary joint, are arran ed side by side as shown, and links 5 are provided pivotally connected with the lmuckles of each pair. In the preferred construction these links are located at the o posedfaces of the pairs of knuckles, 311$ they are integrally connected by" a sleeve 6, through the door. I take care of and below the lower.

which passes a hinge pin 7. These links extend in a direction approximately paralwith the door frame, when the door is in its nearly-closed position.

It 1s necessary to provide some means of confining the parallel movement of the door within narrow predetermined limits in order that the major part of the opening or closing'movement may be a simple swinging movement on the hinge pins 8, thus ensuring that when the door is moved to-its nearly closed position it will be alined as nearly as possible with the door opening. For this purpose I provide a third link 9 pivotally connected with the hinge pins 7 and 8, hinge knuckles. This link is provided with an integral arm 10, which is adapted to play between the stops 11 formedon the door frame. The link may be duplicated in connection with the other hing-e knuckles.

The door and frame are provided with interlocking sealing means to enable a tight joint to be formed between the parts. In

preferably above the pair of the preferred form a groove 12-is formed in i of the door-frame during the initial stages of the opening and closmg movements of this slight movement by bevelling the groove and rib so that they clear one another quickly as the door moves away from the face of the door frame.

Instead of having the adjacent links 5 connected by a sleeve,they may be entirely independent as shown in Fig. 4. In this case also it is preferablektoemplo a link 9 both above the top'of the hinge UClilGS The usual clamps 14 are provided for securing the door in its closed position.

It will be understood,ot course, that various modifications of the construction. may be made which would fall within the scope of my invention, and which would also satisfactorily attain the objects of my invention as set out in the preamble to the specifiqation.

circle, there will be a slight movement of r the door in a direction parallel to the face What I claim is: I 1. In combination a door frame provided with hinge knuckles; a door provided with complementary hinge knuckles; links pivotally connected with corresponding knuckles the door frame knuckles within predeter-.

mined limits at either side of and close to their position of parallelism to the face of the door frame. a

2. In combination a door frame provided with hinge knuckles; a door provided with complementary hinge knuckles; links pivotally connected with corresponding knuckles and extending in a direction approximately parallel to the planeof the face of the door frame; means confining the swing of the links on the door frame knuckles within predetermined limits at either side of and close to their position of parallelism to the face of the door frame; and interlocking sealing means between the door and door frame adapted to permit of'a movement of the door parallel to the plane of the face of the frame during the initial stages of opening or closing thedoor comprising a tapered groove in one part and a corresponding rib on the other.

3. In combination a door frame provided with hinge knuckles; a door provided with complementary hinge knuckles; links pivotally connected with correspondingknuckles adapted to permit a parallel movement of the door relative to the'frame when the former is in its nearly-closed position within predetermined limits at either side of and close to its closed or central position; and in terlocking sealing means between the door and door frame adapted to permit of such movement of the door during the initial stages of opening or closing the door comand extending in a direction approximately parallel to the face of the door 'frame; an arm extending from one of the links; and

stops on the door frame limiting the swing of the arm to confine the movement of the links within predetermined limits at either side of and close to their position of parallelism to the face of the door frame.

5. In combination a door frame provided with hinge knuckles; a door provided with complementary hinge knuckles; links pivotally connected with corresponding knuckles at the opposed faces of the pairs and extend ing in a. direction approximately parallel to the-face of the door frame; a rigid connection between said links; and means confining the swing'of the links on the door frame knuckles within predetermined limits.

6. In combination a door frame provided with hinge knuckles; a door provided with complementary hinge knuckles; links pivotally connected with corresponding knuckles at the opposed faces of the pairs and extending in a direction approximately parallel to the face'of the door frame; a rigid connection between said links; means confining the swing of the links on the door frame knuckles within predetermined limits at either side of and close to their position of parallelism to the face of the door frame comprising a third link pivotally connected with one pair of knuckles, an arm on the link extending rearwardly therefrom, and stops on the door frame limiting the swing of the arm.

Signed at Toronto, Canada, thi 7th day of Nov. 1925. 1

- LEONARD V. DIXON. 

